— I have tried very hard to find a solution to the problem, but in vain.    

— Why not consult with Frank? You see, ______     [ ]

A. great minds think alike      

B. two heads are better than one      

C. a bird in the hand is worth two in the bush      

D. it's better to think twice before doing something

躯干骨包括（）

A.椎骨

B.胸骨

C.肋骨

D.锁骨

E.跗骨